Who Owes Who What - Version 2.0 WOWW is a smart little program for sharing expenses among a group of people. It is ideal for situations such as roommates sharing an apartment (e.g., rent, utilities, groceries), a group sharing trip expenses (e.g., airfare, cruise fare, meals), or a group sharing expenses for a special project (e.g., remodeling, family reunion). Just enter bills or expenses and who paid them, and then enter any amounts paid by any group member to another, and voila! WOWW tells you who owes who what. So you always know who owes who, and how much, each time a bill is paid, regardless of who paid it – all with easy-to-read payment histories.